Jeweler&#39;s tool.



I By

I. ROSENBAUM.

JEWELER'S TOOL.

APPLICATION FILED FEB. 5. 1916.

1,184,490. Patented May 23,116.

WITNESSES THE COLUMBIA PLANOGRAPH c0., WASHINGTON, D.

@FFIQE.

ISAAC ROSENBAUM, OF MOUNT VERNON, INDIANA.

J EWELERS TOOL.

Specification of Letters Patent.

Patented May 23, 1916.

Application filed February 5, 1916. Serial No. 76,395.

To all whom it may concern:

Be it known that I, IsAAo ROSENBAUM, a citizen of the United States, and a resident of Mount Vernon, in the county of Posey and State of Indiana, have invented a new and improved Jewelers Tool, of which the following is a full, clear, and exact description.

My invention relates to a tool for use by jewelers in re-sizing finger rings or like bands.

An object of the invention is to improve a tool for the indicated purpose, in which one of a pair of ring-holding jaws, is provided with grippers arranged as adjustable gage elements.

The invention also has for its object to improve in various particulars, tools of the indicated character, whereby to promote the utility and convenience of the tool.

The invention will be particularly explained in the specific description following.

Reference is to be had to the accompanying drawings forming a part of this specification in which similar reference characters indicate corresponding parts in all the views.

Figure 1 is a perspective View of a jewelers tool embodying my invention; Fig. 2 is a broken end view on a larger scale, and indicating the manner of using the tool in holding a ring; Fig. 3 is an inverted plan View of one of the jaws; Fig. 4 is a section on the line 44, Fig. 3; Fig. 5 is a perspective view of one of the adjustable gage elements; Fig. 6 is a view similar to Fig. 3, but showing a slightly different form of the invention; Fig. 7 is a section similar to Fig. 4, but showing the device formed as in Fig. 6; Fig. 8 is a perspective view of one of the gage elements employed in the form of tool shown in Figs. 6 and 7.

In constructing a practical embodiment of my invention, in the forms shown in Figs. 1 to 4, suitable crossed handles 10, 11, are provided, pivoted by a screw, 12, or the like, and formed respectively, with jaws, 13, 14. The jaw 13 is formed with a convex face to be received at the interior of a ring A as in the back of the jaw 14. The slides 16 are preferably each T-shaped in cross section and are accommodated in a slot or depression 19 complementary to the slot 15 and in a registering slot 21 in a cap plate 20. The cap plate 20 is applied to the back of the jaw and secured by solder or other suitable means. On the plate 20, at the back surface, a scale 22 is produced and on the slides 16 indicating means are provided, there being employed for the purpose, in the form shown in Figs. 1 to 4, pointers 23 on said slides adjacent to the knobs 18.

By the described construction the elements 16 are adjusted along the jaw to or from each other according to the diameter to be given the ring A. It is to be understood that the slides 16 have sufiiciently tight fit in the guide grooves to retain the adjusted position. Thus, it will be observed that the projecting shanks 17 of the adjustable gage elements 16 will constitute gripping members projecting from the concave face of the jaw 14 opposite to the convex face of the opposed jaw 13.

In the form shown in Fig. 6, the jaws, including the jaw 14, are the same as described. The sliding gage elements 16 have shanks of pins 17 corresponding with the shanks 17, but, instead of the knobs 18 at the back of the jaw, a lateral knobbed shank 18 is provided in each slide 16, said shanks projecting from opposite ends of the jaw. In-

stead of the pointer 28, I may produce an indicating line or point on the surface of the slide as shown at 23.

The jaw 14, in both forms of the device, may be made in one piece with the handle or be detachably secured as may be desired. A detachable connection with the handle may be made by a threaded stud 24 on the handle and a corresponding threaded socket 25 in the jaw.

In the use of the device the ring is placed between the two jaws and the two pins 17 are adjusted according to the amount of material to be taken out of the ring to reduce its size. The pins are adjusted by the scale at the back of the jaw 14 to indicate a given sector of the ring to be removed. When the jaws are brought together with the'ring in position as in Fig. 2, the pins will make a slight impression on the ring and the material between such impressions is removed.

Having thus described my invention I claim'as new, and desire to secure by Letters Patent:

1. A tool of the class described including clamp jaws presenting opposed faces, and gripper members relatively adjustable on one ofsaid faces and constituting gage elements.

2. A tool of the class described including clamp jaws presenting opposed faces and adapted to clamp a ring therebetween, and gage means on one of said faces to gage the predetermined size of the ring.

3. A tool of the class described including clamp jaws adapted to clamp a ring, and gage means including a scale and indicator on one of said jaws at the back thereof to gage the predetermined size of the ring;

4. A tool of the class described including jaws adapted to clamp a ring, and gage means on one of said jaws to gage the size of the ring, said means including adjustable elements projecting from the face of the jaw carrying the same to constitute gripper members, anda scale on said lastmentioned jaw, coacting with the said adjustable elements.

5. A jewelers tool of the class described including a pair of clamp jaws having 0pposed surfaces respectively convex and conhaving a transverse slot therein extending through the back of the jaw and projecting beyond the face of the jaw to constitute gripper members,members slidably adjustable in said slot, and a retainingplate at tghe back of the jaw for said adjustable memers.

7. A. jewelers tool of the class described including handled jaws, one of said jaws having a transverse slot therein, slides adjustablerelatively to each other in said slot, and provided with finger-holds to move the same, means at the back of the aw retaining said slides on the jaw, and coacting gage elements on the jaw and on the said slides. V j t In testimony whereofI have signed my name to this specification in the presence of two subscribing witnesses.

ISAAC ROSENBAUM.

lVitnesses: V

CARL N. HENDRIX, LOULIE E. BLUE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. a 

